SSC CGL Biology · Free notes

Microbiology and Disease: SSC CGL Biology

Microbiology and Disease has 11 questions in the SSC CGL Tier I bank: two from the 2023 shifts and nine from the 2024 shifts, and none from the 2025 shifts. They match a disease to the organism behind it, to the organ it hits, or to its other name or vaccine. One page sets out both tables.

The handout has every subtopic, worked example, formula and trap with answers shown. The formula sheet is the chapter’s formulas and traps alone, on one page.

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Subtopic notes

Pathogens and Diseases
11 PYQs
Which diseases come from bacteria, viruses or protozoa, the organism behind each, bacterial shapes, how faeco-oral diseases spread, and diseases with the organ they hit, their other names and vaccines.

Formula & revision sheet

0 formulas · 2 reference tables · 2 gotchas across all subtopics — the exam-eve cheat-sheet

Pathogens and Diseases

Reference tables (2)

What causes each disease4 rows

Disease or term	Cause or meaning
Malaria, typhoid, cholera	Plasmodium, Salmonella, VibrioQ
Spirillum	Spiral bacteriumQ
Ancylostoma	HookwormQ
Five Fs	Flies, fingers, fomites, food, fluidsQ

Diseases, organs, other names and vaccines5 rows

Disease	Fact
Mumps	Salivary glandsQ
Diphtheria	Nose and throatQ
Jaundice	Also called icterusQ
Polio, Salk vaccine	Inactivated, 1952Q
Cold and cough	TulsiQ

Watch out for (2)

Malaria is not bacterial
→ What causes each disease
Diphtheria hits the throat, not the glands
→ Diseases, organs, other names and vaccines

PYQ weightage by concept

2 concepts · 11 PYQs — where the marks actually sit, so you know what to drill first

Pathogens and Diseases11 PYQs · 100%

Concept	PYQs	Share
Diseases, organs, other names and vaccines	6	55%
What causes each disease	5	45%

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